Locking device for hatch cover of manned submersible

Abstract

The invention discloses a locking device for a hatch cover of a manned submersible, and relates to the technical field of machinery. The locking device comprises a rotating shaft arranged on the hatchcover, an outer handwheel, an inner handwheel, a shaft sealing mechanism, a gear transmission locking mechanism, and wedge-shaped strips welded to the inner side of the circumferential wall of a hatch, wherein the gear transmission locking mechanism comprises a ring gear, a pinion, a composite gear and connecting rod systems; the pinion is arranged on the rotating shaft and meshes with the ring gear through the composite gear; and the pinion can drive the ring gear to rotate when rotating with the rotating shaft so as to drive the connecting rod systems to rotate to be in contact with or detached from the wedge-shaped strips and realize the locking and unlocking action. The locking device has a reasonable design of gear transmission and the number of teeth of each gear, so that the locking and unlocking are more labor-saving and the operability is high.

Description

technical field [0001] The invention relates to the technical field of machinery, in particular to a hatch cover locking device for a manned submersible. Background technique [0002] The hatch cover of the manned submersible is a key component of the manned submersible as a passage for the submersible driver to enter and exit the manned cabin. After the driver enters the manned compartment through the hatch cover, the hatch cover is locked by means of the hatch cover locking mechanism to prevent seawater from entering. The basic requirements for the design of the hatch cover locking mechanism are reliability and operability, that is, it must have good watertightness under water, and no leakage is allowed; at the same time, it can be operated inside and outside the manned cabin, so as to Ensure that rescue measures can be taken in case of emergency. [0003] The Chinese patent application number CN103895817B discloses a hatch cover locking device for a deep-sea manned subm...

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Problems solved by technology

[0003] The Chinese patent application number CN103895817B discloses a hatch cover locking device for a deep-sea manned submersible. The device utilizes the principle of leverage to realize the basic functions of the locking device. However, considering the small space in the manned cabin, using this When using a locking device with this structure, the driver must use a relatively large force to turn the handwheel to lock the hatch cover after entering the manned compartment, and the operability is poor. At the same time, the mechanism is composed of many rods. If there is a problem with a certain transmission rod, the handwheel cannot be operated even outside the cabin to achieve emergency rescue, and the reliability is also low

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